2 * Marvell Wireless LAN device driver: SDIO specific handling
4 * Copyright (C) 2011, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
20 #include <linux/firmware.h>
32 #define SDIO_VERSION "1.0"
34 /* The mwifiex_sdio_remove() callback function is called when
35 * user removes this module from kernel space or ejects
36 * the card from the slot. The driver handles these 2 cases
38 * If the user is removing the module, the few commands (FUNC_SHUTDOWN,
39 * HS_CANCEL etc.) are sent to the firmware.
40 * If the card is removed, there is no need to send these command.
42 * The variable 'user_rmmod' is used to distinguish these two
43 * scenarios. This flag is initialized as FALSE in case the card
44 * is removed, and will be set to TRUE for module removal when
45 * module_exit function is called.
49 static struct mwifiex_if_ops sdio_ops
;
51 static struct semaphore add_remove_card_sem
;
53 static int mwifiex_sdio_resume(struct device
*dev
);
58 * This function probes an mwifiex device and registers it. It allocates
59 * the card structure, enables SDIO function number and initiates the
60 * device registration and initialization procedure by adding a logical
64 mwifiex_sdio_probe(struct sdio_func
*func
, const struct sdio_device_id
*id
)
67 struct sdio_mmc_card
*card
= NULL
;
69 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
70 func
->vendor
, func
->device
, func
->class, func
->num
);
72 card
= kzalloc(sizeof(struct sdio_mmc_card
), GFP_KERNEL
);
78 func
->card
->quirks
|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE
;
80 if (id
->driver_data
) {
81 struct mwifiex_sdio_device
*data
= (void *)id
->driver_data
;
83 card
->firmware
= data
->firmware
;
84 card
->reg
= data
->reg
;
85 card
->max_ports
= data
->max_ports
;
86 card
->mp_agg_pkt_limit
= data
->mp_agg_pkt_limit
;
89 sdio_claim_host(func
);
90 ret
= sdio_enable_func(func
);
91 sdio_release_host(func
);
94 pr_err("%s: failed to enable function\n", __func__
);
99 if (mwifiex_add_card(card
, &add_remove_card_sem
, &sdio_ops
,
101 pr_err("%s: add card failed\n", __func__
);
103 sdio_claim_host(func
);
104 ret
= sdio_disable_func(func
);
105 sdio_release_host(func
);
115 * This function removes the interface and frees up the card structure.
118 mwifiex_sdio_remove(struct sdio_func
*func
)
120 struct sdio_mmc_card
*card
;
121 struct mwifiex_adapter
*adapter
;
122 struct mwifiex_private
*priv
;
125 pr_debug("info: SDIO func num=%d\n", func
->num
);
127 card
= sdio_get_drvdata(func
);
131 adapter
= card
->adapter
;
132 if (!adapter
|| !adapter
->priv_num
)
135 /* In case driver is removed when asynchronous FW load is in progress */
136 wait_for_completion(&adapter
->fw_load
);
139 if (adapter
->is_suspended
)
140 mwifiex_sdio_resume(adapter
->dev
);
142 for (i
= 0; i
< adapter
->priv_num
; i
++)
143 if ((GET_BSS_ROLE(adapter
->priv
[i
]) ==
144 MWIFIEX_BSS_ROLE_STA
) &&
145 adapter
->priv
[i
]->media_connected
)
146 mwifiex_deauthenticate(adapter
->priv
[i
], NULL
);
148 priv
= mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_ANY
);
149 mwifiex_disable_auto_ds(priv
);
150 mwifiex_init_shutdown_fw(priv
, MWIFIEX_FUNC_SHUTDOWN
);
153 mwifiex_remove_card(card
->adapter
, &add_remove_card_sem
);
160 * Kernel needs to suspend all functions separately. Therefore all
161 * registered functions must have drivers with suspend and resume
162 * methods. Failing that the kernel simply removes the whole card.
164 * If already not suspended, this function allocates and sends a host
165 * sleep activate request to the firmware and turns off the traffic.
167 static int mwifiex_sdio_suspend(struct device
*dev
)
169 struct sdio_func
*func
= dev_to_sdio_func(dev
);
170 struct sdio_mmc_card
*card
;
171 struct mwifiex_adapter
*adapter
;
172 mmc_pm_flag_t pm_flag
= 0;
176 pm_flag
= sdio_get_host_pm_caps(func
);
177 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
178 sdio_func_id(func
), pm_flag
);
179 if (!(pm_flag
& MMC_PM_KEEP_POWER
)) {
180 pr_err("%s: cannot remain alive while host is"
181 " suspended\n", sdio_func_id(func
));
185 card
= sdio_get_drvdata(func
);
186 if (!card
|| !card
->adapter
) {
187 pr_err("suspend: invalid card or adapter\n");
191 pr_err("suspend: sdio_func is not specified\n");
195 adapter
= card
->adapter
;
197 /* Enable the Host Sleep */
198 if (!mwifiex_enable_hs(adapter
)) {
199 dev_err(adapter
->dev
, "cmd: failed to suspend\n");
203 dev_dbg(adapter
->dev
, "cmd: suspend with MMC_PM_KEEP_POWER\n");
204 ret
= sdio_set_host_pm_flags(func
, MMC_PM_KEEP_POWER
);
206 /* Indicate device suspended */
207 adapter
->is_suspended
= true;
215 * Kernel needs to suspend all functions separately. Therefore all
216 * registered functions must have drivers with suspend and resume
217 * methods. Failing that the kernel simply removes the whole card.
219 * If already not resumed, this function turns on the traffic and
220 * sends a host sleep cancel request to the firmware.
222 static int mwifiex_sdio_resume(struct device
*dev
)
224 struct sdio_func
*func
= dev_to_sdio_func(dev
);
225 struct sdio_mmc_card
*card
;
226 struct mwifiex_adapter
*adapter
;
227 mmc_pm_flag_t pm_flag
= 0;
230 pm_flag
= sdio_get_host_pm_caps(func
);
231 card
= sdio_get_drvdata(func
);
232 if (!card
|| !card
->adapter
) {
233 pr_err("resume: invalid card or adapter\n");
237 pr_err("resume: sdio_func is not specified\n");
241 adapter
= card
->adapter
;
243 if (!adapter
->is_suspended
) {
244 dev_warn(adapter
->dev
, "device already resumed\n");
248 adapter
->is_suspended
= false;
250 /* Disable Host Sleep */
251 mwifiex_cancel_hs(mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
257 /* Device ID for SD8786 */
258 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
259 /* Device ID for SD8787 */
260 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
261 /* Device ID for SD8797 */
262 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
265 static const struct sdio_device_id mwifiex_ids
[] = {
266 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8786
),
267 .driver_data
= (unsigned long) &mwifiex_sdio_sd8786
},
268 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8787
),
269 .driver_data
= (unsigned long) &mwifiex_sdio_sd8787
},
270 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8797
),
271 .driver_data
= (unsigned long) &mwifiex_sdio_sd8797
},
275 MODULE_DEVICE_TABLE(sdio
, mwifiex_ids
);
277 static const struct dev_pm_ops mwifiex_sdio_pm_ops
= {
278 .suspend
= mwifiex_sdio_suspend
,
279 .resume
= mwifiex_sdio_resume
,
282 static struct sdio_driver mwifiex_sdio
= {
283 .name
= "mwifiex_sdio",
284 .id_table
= mwifiex_ids
,
285 .probe
= mwifiex_sdio_probe
,
286 .remove
= mwifiex_sdio_remove
,
288 .owner
= THIS_MODULE
,
289 .pm
= &mwifiex_sdio_pm_ops
,
294 * This function writes data into SDIO card register.
297 mwifiex_write_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u8 data
)
299 struct sdio_mmc_card
*card
= adapter
->card
;
302 sdio_claim_host(card
->func
);
303 sdio_writeb(card
->func
, data
, reg
, &ret
);
304 sdio_release_host(card
->func
);
310 * This function reads data from SDIO card register.
313 mwifiex_read_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u8
*data
)
315 struct sdio_mmc_card
*card
= adapter
->card
;
319 sdio_claim_host(card
->func
);
320 val
= sdio_readb(card
->func
, reg
, &ret
);
321 sdio_release_host(card
->func
);
329 * This function writes multiple data into SDIO card memory.
331 * This does not work in suspended mode.
334 mwifiex_write_data_sync(struct mwifiex_adapter
*adapter
,
335 u8
*buffer
, u32 pkt_len
, u32 port
)
337 struct sdio_mmc_card
*card
= adapter
->card
;
340 (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
: BLOCK_MODE
;
341 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
344 BLOCK_MODE
) ? (pkt_len
/
345 MWIFIEX_SDIO_BLOCK_SIZE
) : pkt_len
;
346 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
348 if (adapter
->is_suspended
) {
349 dev_err(adapter
->dev
,
350 "%s: not allowed while suspended\n", __func__
);
354 sdio_claim_host(card
->func
);
356 ret
= sdio_writesb(card
->func
, ioport
, buffer
, blk_cnt
* blk_size
);
358 sdio_release_host(card
->func
);
364 * This function reads multiple data from SDIO card memory.
366 static int mwifiex_read_data_sync(struct mwifiex_adapter
*adapter
, u8
*buffer
,
367 u32 len
, u32 port
, u8 claim
)
369 struct sdio_mmc_card
*card
= adapter
->card
;
371 u8 blk_mode
= (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
373 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
374 u32 blk_cnt
= (blk_mode
== BLOCK_MODE
) ? (len
/ MWIFIEX_SDIO_BLOCK_SIZE
)
376 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
379 sdio_claim_host(card
->func
);
381 ret
= sdio_readsb(card
->func
, buffer
, ioport
, blk_cnt
* blk_size
);
384 sdio_release_host(card
->func
);
390 * This function wakes up the card.
392 * A host power up command is written to the card configuration
393 * register to wake up the card.
395 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter
*adapter
)
397 dev_dbg(adapter
->dev
, "event: wakeup device...\n");
399 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, HOST_POWER_UP
);
403 * This function is called after the card has woken up.
405 * The card configuration register is reset.
407 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter
*adapter
)
409 dev_dbg(adapter
->dev
, "cmd: wakeup device completed\n");
411 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0);
415 * This function initializes the IO ports.
417 * The following operations are performed -
418 * - Read the IO ports (0, 1 and 2)
419 * - Set host interrupt Reset-To-Read to clear
420 * - Set auto re-enable interrupt
422 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter
*adapter
)
425 struct sdio_mmc_card
*card
= adapter
->card
;
429 /* Read the IO port */
430 if (!mwifiex_read_reg(adapter
, IO_PORT_0_REG
, ®
))
431 adapter
->ioport
|= (reg
& 0xff);
435 if (!mwifiex_read_reg(adapter
, IO_PORT_1_REG
, ®
))
436 adapter
->ioport
|= ((reg
& 0xff) << 8);
440 if (!mwifiex_read_reg(adapter
, IO_PORT_2_REG
, ®
))
441 adapter
->ioport
|= ((reg
& 0xff) << 16);
445 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter
->ioport
);
447 /* Set Host interrupt reset to read to clear */
448 if (!mwifiex_read_reg(adapter
, HOST_INT_RSR_REG
, ®
))
449 mwifiex_write_reg(adapter
, HOST_INT_RSR_REG
,
450 reg
| card
->reg
->sdio_int_mask
);
454 /* Dnld/Upld ready set to auto reset */
455 if (!mwifiex_read_reg(adapter
, card
->reg
->card_misc_cfg_reg
, ®
))
456 mwifiex_write_reg(adapter
, card
->reg
->card_misc_cfg_reg
,
457 reg
| AUTO_RE_ENABLE_INT
);
465 * This function sends data to the card.
467 static int mwifiex_write_data_to_card(struct mwifiex_adapter
*adapter
,
468 u8
*payload
, u32 pkt_len
, u32 port
)
474 ret
= mwifiex_write_data_sync(adapter
, payload
, pkt_len
, port
);
477 dev_err(adapter
->dev
, "host_to_card, write iomem"
478 " (%d) failed: %d\n", i
, ret
);
479 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
480 dev_err(adapter
->dev
, "write CFG reg failed\n");
483 if (i
> MAX_WRITE_IOMEM_RETRY
)
492 * This function gets the read port.
494 * If control port bit is set in MP read bitmap, the control port
495 * is returned, otherwise the current read port is returned and
496 * the value is increased (provided it does not reach the maximum
497 * limit, in which case it is reset to 1)
499 static int mwifiex_get_rd_port(struct mwifiex_adapter
*adapter
, u8
*port
)
501 struct sdio_mmc_card
*card
= adapter
->card
;
502 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
503 u32 rd_bitmap
= card
->mp_rd_bitmap
;
505 dev_dbg(adapter
->dev
, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap
);
507 if (!(rd_bitmap
& (CTRL_PORT_MASK
| reg
->data_port_mask
)))
510 if (card
->mp_rd_bitmap
& CTRL_PORT_MASK
) {
511 card
->mp_rd_bitmap
&= (u32
) (~CTRL_PORT_MASK
);
513 dev_dbg(adapter
->dev
, "data: port=%d mp_rd_bitmap=0x%08x\n",
514 *port
, card
->mp_rd_bitmap
);
518 if (!(card
->mp_rd_bitmap
& (1 << card
->curr_rd_port
)))
521 /* We are now handling the SDIO data ports */
522 card
->mp_rd_bitmap
&= (u32
)(~(1 << card
->curr_rd_port
));
523 *port
= card
->curr_rd_port
;
525 if (++card
->curr_rd_port
== card
->max_ports
)
526 card
->curr_rd_port
= reg
->start_rd_port
;
528 dev_dbg(adapter
->dev
,
529 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
530 *port
, rd_bitmap
, card
->mp_rd_bitmap
);
536 * This function gets the write port for data.
538 * The current write port is returned if available and the value is
539 * increased (provided it does not reach the maximum limit, in which
540 * case it is reset to 1)
542 static int mwifiex_get_wr_port_data(struct mwifiex_adapter
*adapter
, u32
*port
)
544 struct sdio_mmc_card
*card
= adapter
->card
;
545 u32 wr_bitmap
= card
->mp_wr_bitmap
;
547 dev_dbg(adapter
->dev
, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap
);
549 if (!(wr_bitmap
& card
->mp_data_port_mask
))
552 if (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)) {
553 card
->mp_wr_bitmap
&= (u32
) (~(1 << card
->curr_wr_port
));
554 *port
= card
->curr_wr_port
;
555 if (++card
->curr_wr_port
== card
->mp_end_port
)
556 card
->curr_wr_port
= card
->reg
->start_wr_port
;
558 adapter
->data_sent
= true;
562 if (*port
== CTRL_PORT
) {
563 dev_err(adapter
->dev
,
564 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
565 *port
, card
->curr_wr_port
, wr_bitmap
,
570 dev_dbg(adapter
->dev
, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
571 *port
, wr_bitmap
, card
->mp_wr_bitmap
);
577 * This function polls the card status.
580 mwifiex_sdio_poll_card_status(struct mwifiex_adapter
*adapter
, u8 bits
)
582 struct sdio_mmc_card
*card
= adapter
->card
;
586 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
587 if (mwifiex_read_reg(adapter
, card
->reg
->poll_reg
, &cs
))
589 else if ((cs
& bits
) == bits
)
592 usleep_range(10, 20);
595 dev_err(adapter
->dev
, "poll card status failed, tries = %d\n", tries
);
601 * This function reads the firmware status.
604 mwifiex_sdio_read_fw_status(struct mwifiex_adapter
*adapter
, u16
*dat
)
606 struct sdio_mmc_card
*card
= adapter
->card
;
607 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
610 if (mwifiex_read_reg(adapter
, reg
->status_reg_0
, &fws0
))
613 if (mwifiex_read_reg(adapter
, reg
->status_reg_1
, &fws1
))
616 *dat
= (u16
) ((fws1
<< 8) | fws0
);
622 * This function disables the host interrupt.
624 * The host interrupt mask is read, the disable bit is reset and
625 * written back to the card host interrupt mask register.
627 static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter
*adapter
)
629 u8 host_int_mask
, host_int_disable
= HOST_INT_DISABLE
;
631 /* Read back the host_int_mask register */
632 if (mwifiex_read_reg(adapter
, HOST_INT_MASK_REG
, &host_int_mask
))
635 /* Update with the mask and write back to the register */
636 host_int_mask
&= ~host_int_disable
;
638 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, host_int_mask
)) {
639 dev_err(adapter
->dev
, "disable host interrupt failed\n");
647 * This function enables the host interrupt.
649 * The host interrupt enable mask is written to the card
650 * host interrupt mask register.
652 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter
*adapter
)
654 struct sdio_mmc_card
*card
= adapter
->card
;
656 /* Simply write the mask to the register */
657 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
,
658 card
->reg
->host_int_enable
)) {
659 dev_err(adapter
->dev
, "enable host interrupt failed\n");
666 * This function sends a data buffer to the card.
668 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter
*adapter
,
669 u32
*type
, u8
*buffer
,
670 u32 npayload
, u32 ioport
)
676 dev_err(adapter
->dev
, "%s: buffer is NULL\n", __func__
);
680 ret
= mwifiex_read_data_sync(adapter
, buffer
, npayload
, ioport
, 1);
683 dev_err(adapter
->dev
, "%s: read iomem failed: %d\n", __func__
,
688 nb
= le16_to_cpu(*(__le16
*) (buffer
));
690 dev_err(adapter
->dev
, "%s: invalid packet, nb=%d npayload=%d\n",
691 __func__
, nb
, npayload
);
695 *type
= le16_to_cpu(*(__le16
*) (buffer
+ 2));
701 * This function downloads the firmware to the card.
703 * Firmware is downloaded to the card in blocks. Every block download
704 * is tested for CRC errors, and retried a number of times before
707 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter
*adapter
,
708 struct mwifiex_fw_image
*fw
)
710 struct sdio_mmc_card
*card
= adapter
->card
;
711 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
713 u8
*firmware
= fw
->fw_buf
;
714 u32 firmware_len
= fw
->fw_len
;
719 u32 txlen
, tx_blocks
= 0, tries
;
723 dev_err(adapter
->dev
,
724 "firmware image not found! Terminating download\n");
728 dev_dbg(adapter
->dev
, "info: downloading FW image (%d bytes)\n",
731 /* Assume that the allocated buffer is 8-byte aligned */
732 fwbuf
= kzalloc(MWIFIEX_UPLD_SIZE
, GFP_KERNEL
);
736 /* Perform firmware data transfer */
738 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
740 ret
= mwifiex_sdio_poll_card_status(adapter
, CARD_IO_READY
|
743 dev_err(adapter
->dev
, "FW download with helper:"
744 " poll status timeout @ %d\n", offset
);
749 if (offset
>= firmware_len
)
752 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
753 ret
= mwifiex_read_reg(adapter
, reg
->base_0_reg
,
756 dev_err(adapter
->dev
,
757 "dev BASE0 register read failed: "
758 "base0=%#04X(%d). Terminating dnld\n",
762 ret
= mwifiex_read_reg(adapter
, reg
->base_1_reg
,
765 dev_err(adapter
->dev
,
766 "dev BASE1 register read failed: "
767 "base1=%#04X(%d). Terminating dnld\n",
771 len
= (u16
) (((base1
& 0xff) << 8) | (base0
& 0xff));
776 usleep_range(10, 20);
781 } else if (len
> MWIFIEX_UPLD_SIZE
) {
782 dev_err(adapter
->dev
,
783 "FW dnld failed @ %d, invalid length %d\n",
793 if (i
> MAX_WRITE_IOMEM_RETRY
) {
794 dev_err(adapter
->dev
,
795 "FW dnld failed @ %d, over max retry\n",
800 dev_err(adapter
->dev
, "CRC indicated by the helper:"
801 " len = 0x%04X, txlen = %d\n", len
, txlen
);
803 /* Setting this to 0 to resend from same offset */
808 /* Set blocksize to transfer - checking for last
810 if (firmware_len
- offset
< txlen
)
811 txlen
= firmware_len
- offset
;
813 tx_blocks
= (txlen
+ MWIFIEX_SDIO_BLOCK_SIZE
- 1)
814 / MWIFIEX_SDIO_BLOCK_SIZE
;
816 /* Copy payload to buffer */
817 memmove(fwbuf
, &firmware
[offset
], txlen
);
820 ret
= mwifiex_write_data_sync(adapter
, fwbuf
, tx_blocks
*
821 MWIFIEX_SDIO_BLOCK_SIZE
,
824 dev_err(adapter
->dev
,
825 "FW download, write iomem (%d) failed @ %d\n",
827 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
828 dev_err(adapter
->dev
, "write CFG reg failed\n");
837 dev_dbg(adapter
->dev
, "info: FW download over, size %d bytes\n",
847 * This function checks the firmware status in card.
849 * The winner interface is also determined by this function.
851 static int mwifiex_check_fw_status(struct mwifiex_adapter
*adapter
,
854 struct sdio_mmc_card
*card
= adapter
->card
;
860 /* Wait for firmware initialization event */
861 for (tries
= 0; tries
< poll_num
; tries
++) {
862 ret
= mwifiex_sdio_read_fw_status(adapter
, &firmware_stat
);
865 if (firmware_stat
== FIRMWARE_READY_SDIO
) {
876 (adapter
, card
->reg
->status_reg_0
, &winner_status
))
888 * This function reads the interrupt status from card.
890 static void mwifiex_interrupt_status(struct mwifiex_adapter
*adapter
)
892 struct sdio_mmc_card
*card
= adapter
->card
;
896 if (mwifiex_read_data_sync(adapter
, card
->mp_regs
,
897 card
->reg
->max_mp_regs
,
898 REG_PORT
| MWIFIEX_SDIO_BYTE_MODE_MASK
, 0)) {
899 dev_err(adapter
->dev
, "read mp_regs failed\n");
903 sdio_ireg
= card
->mp_regs
[HOST_INTSTATUS_REG
];
906 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
907 * Clear the interrupt status register
909 dev_dbg(adapter
->dev
, "int: sdio_ireg = %#x\n", sdio_ireg
);
910 spin_lock_irqsave(&adapter
->int_lock
, flags
);
911 adapter
->int_status
|= sdio_ireg
;
912 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
917 * SDIO interrupt handler.
919 * This function reads the interrupt status from firmware and handles
920 * the interrupt in current thread (ksdioirqd) right away.
923 mwifiex_sdio_interrupt(struct sdio_func
*func
)
925 struct mwifiex_adapter
*adapter
;
926 struct sdio_mmc_card
*card
;
928 card
= sdio_get_drvdata(func
);
929 if (!card
|| !card
->adapter
) {
930 pr_debug("int: func=%p card=%p adapter=%p\n",
931 func
, card
, card
? card
->adapter
: NULL
);
934 adapter
= card
->adapter
;
936 if (adapter
->surprise_removed
)
939 if (!adapter
->pps_uapsd_mode
&& adapter
->ps_state
== PS_STATE_SLEEP
)
940 adapter
->ps_state
= PS_STATE_AWAKE
;
942 mwifiex_interrupt_status(adapter
);
943 mwifiex_main_process(adapter
);
947 * This function decodes a received packet.
949 * Based on the type, the packet is treated as either a data, or
950 * a command response, or an event, and the correct handler
951 * function is invoked.
953 static int mwifiex_decode_rx_packet(struct mwifiex_adapter
*adapter
,
954 struct sk_buff
*skb
, u32 upld_typ
)
958 skb_pull(skb
, INTF_HEADER_LEN
);
961 case MWIFIEX_TYPE_DATA
:
962 dev_dbg(adapter
->dev
, "info: --- Rx: Data packet ---\n");
963 mwifiex_handle_rx_packet(adapter
, skb
);
966 case MWIFIEX_TYPE_CMD
:
967 dev_dbg(adapter
->dev
, "info: --- Rx: Cmd Response ---\n");
968 /* take care of curr_cmd = NULL case */
969 if (!adapter
->curr_cmd
) {
970 cmd_buf
= adapter
->upld_buf
;
972 if (adapter
->ps_state
== PS_STATE_SLEEP_CFM
)
973 mwifiex_process_sleep_confirm_resp(adapter
,
977 memcpy(cmd_buf
, skb
->data
,
978 min_t(u32
, MWIFIEX_SIZE_OF_CMD_BUFFER
,
981 dev_kfree_skb_any(skb
);
983 adapter
->cmd_resp_received
= true;
984 adapter
->curr_cmd
->resp_skb
= skb
;
988 case MWIFIEX_TYPE_EVENT
:
989 dev_dbg(adapter
->dev
, "info: --- Rx: Event ---\n");
990 adapter
->event_cause
= *(u32
*) skb
->data
;
992 if ((skb
->len
> 0) && (skb
->len
< MAX_EVENT_SIZE
))
993 memcpy(adapter
->event_body
,
994 skb
->data
+ MWIFIEX_EVENT_HEADER_LEN
,
997 /* event cause has been saved to adapter->event_cause */
998 adapter
->event_received
= true;
999 adapter
->event_skb
= skb
;
1004 dev_err(adapter
->dev
, "unknown upload type %#x\n", upld_typ
);
1005 dev_kfree_skb_any(skb
);
1013 * This function transfers received packets from card to driver, performing
1014 * aggregation if required.
1016 * For data received on control port, or if aggregation is disabled, the
1017 * received buffers are uploaded as separate packets. However, if aggregation
1018 * is enabled and required, the buffers are copied onto an aggregation buffer,
1019 * provided there is space left, processed and finally uploaded.
1021 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter
*adapter
,
1022 struct sk_buff
*skb
, u8 port
)
1024 struct sdio_mmc_card
*card
= adapter
->card
;
1025 s32 f_do_rx_aggr
= 0;
1026 s32 f_do_rx_cur
= 0;
1028 struct sk_buff
*skb_deaggr
;
1030 u32 pkt_len
, pkt_type
, mport
;
1032 u32 rx_len
= skb
->len
;
1034 if (port
== CTRL_PORT
) {
1035 /* Read the command Resp without aggr */
1036 dev_dbg(adapter
->dev
, "info: %s: no aggregation for cmd "
1037 "response\n", __func__
);
1040 goto rx_curr_single
;
1043 if (!card
->mpa_rx
.enabled
) {
1044 dev_dbg(adapter
->dev
, "info: %s: rx aggregation disabled\n",
1048 goto rx_curr_single
;
1051 if (card
->mp_rd_bitmap
& (~((u32
) CTRL_PORT_MASK
))) {
1052 /* Some more data RX pending */
1053 dev_dbg(adapter
->dev
, "info: %s: not last packet\n", __func__
);
1055 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1056 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
)) {
1059 /* No room in Aggr buf, do rx aggr now */
1064 /* Rx aggr not in progress */
1069 /* No more data RX pending */
1070 dev_dbg(adapter
->dev
, "info: %s: last packet\n", __func__
);
1072 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1074 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
))
1077 /* No room in Aggr buf, do rx aggr now */
1085 dev_dbg(adapter
->dev
, "info: current packet aggregation\n");
1086 /* Curr pkt can be aggregated */
1087 MP_RX_AGGR_SETUP(card
, skb
, port
);
1089 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card
) ||
1090 MP_RX_AGGR_PORT_LIMIT_REACHED(card
)) {
1091 dev_dbg(adapter
->dev
, "info: %s: aggregated packet "
1092 "limit reached\n", __func__
);
1093 /* No more pkts allowed in Aggr buf, rx it */
1099 /* do aggr RX now */
1100 dev_dbg(adapter
->dev
, "info: do_rx_aggr: num of packets: %d\n",
1101 card
->mpa_rx
.pkt_cnt
);
1103 mport
= (adapter
->ioport
| 0x1000 |
1104 (card
->mpa_rx
.ports
<< 4)) + card
->mpa_rx
.start_port
;
1106 if (mwifiex_read_data_sync(adapter
, card
->mpa_rx
.buf
,
1107 card
->mpa_rx
.buf_len
, mport
, 1))
1110 curr_ptr
= card
->mpa_rx
.buf
;
1112 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1114 /* get curr PKT len & type */
1115 pkt_len
= *(u16
*) &curr_ptr
[0];
1116 pkt_type
= *(u16
*) &curr_ptr
[2];
1118 /* copy pkt to deaggr buf */
1119 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1121 if ((pkt_type
== MWIFIEX_TYPE_DATA
) && (pkt_len
<=
1122 card
->mpa_rx
.len_arr
[pind
])) {
1124 memcpy(skb_deaggr
->data
, curr_ptr
, pkt_len
);
1126 skb_trim(skb_deaggr
, pkt_len
);
1128 /* Process de-aggr packet */
1129 mwifiex_decode_rx_packet(adapter
, skb_deaggr
,
1132 dev_err(adapter
->dev
, "wrong aggr pkt:"
1133 " type=%d len=%d max_len=%d\n",
1135 card
->mpa_rx
.len_arr
[pind
]);
1136 dev_kfree_skb_any(skb_deaggr
);
1138 curr_ptr
+= card
->mpa_rx
.len_arr
[pind
];
1140 MP_RX_AGGR_BUF_RESET(card
);
1145 dev_dbg(adapter
->dev
, "info: RX: port: %d, rx_len: %d\n",
1148 if (mwifiex_sdio_card_to_host(adapter
, &pkt_type
,
1149 skb
->data
, skb
->len
,
1150 adapter
->ioport
+ port
))
1153 mwifiex_decode_rx_packet(adapter
, skb
, pkt_type
);
1159 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1160 /* Multiport-aggregation transfer failed - cleanup */
1161 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1162 /* copy pkt to deaggr buf */
1163 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1164 dev_kfree_skb_any(skb_deaggr
);
1166 MP_RX_AGGR_BUF_RESET(card
);
1170 /* Single transfer pending. Free curr buff also */
1171 dev_kfree_skb_any(skb
);
1177 * This function checks the current interrupt status.
1179 * The following interrupts are checked and handled by this function -
1182 * - Packets received
1184 * Since the firmware does not generate download ready interrupt if the
1185 * port updated is command port only, command sent interrupt checking
1186 * should be done manually, and for every SDIO interrupt.
1188 * In case of Rx packets received, the packets are uploaded from card to
1189 * host and processed accordingly.
1191 static int mwifiex_process_int_status(struct mwifiex_adapter
*adapter
)
1193 struct sdio_mmc_card
*card
= adapter
->card
;
1194 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
1197 struct sk_buff
*skb
;
1198 u8 port
= CTRL_PORT
;
1199 u32 len_reg_l
, len_reg_u
;
1202 unsigned long flags
;
1204 spin_lock_irqsave(&adapter
->int_lock
, flags
);
1205 sdio_ireg
= adapter
->int_status
;
1206 adapter
->int_status
= 0;
1207 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
1212 if (sdio_ireg
& DN_LD_HOST_INT_STATUS
) {
1213 card
->mp_wr_bitmap
=
1214 ((u32
) card
->mp_regs
[reg
->wr_bitmap_u
]) << 8;
1215 card
->mp_wr_bitmap
|=
1216 (u32
) card
->mp_regs
[reg
->wr_bitmap_l
];
1217 dev_dbg(adapter
->dev
, "int: DNLD: wr_bitmap=0x%08x\n",
1218 card
->mp_wr_bitmap
);
1219 if (adapter
->data_sent
&&
1220 (card
->mp_wr_bitmap
& card
->mp_data_port_mask
)) {
1221 dev_dbg(adapter
->dev
,
1222 "info: <--- Tx DONE Interrupt --->\n");
1223 adapter
->data_sent
= false;
1227 /* As firmware will not generate download ready interrupt if the port
1228 updated is command port only, cmd_sent should be done for any SDIO
1230 if (adapter
->cmd_sent
) {
1231 /* Check if firmware has attach buffer at command port and
1232 update just that in wr_bit_map. */
1233 card
->mp_wr_bitmap
|=
1234 (u32
) card
->mp_regs
[reg
->wr_bitmap_l
] & CTRL_PORT_MASK
;
1235 if (card
->mp_wr_bitmap
& CTRL_PORT_MASK
)
1236 adapter
->cmd_sent
= false;
1239 dev_dbg(adapter
->dev
, "info: cmd_sent=%d data_sent=%d\n",
1240 adapter
->cmd_sent
, adapter
->data_sent
);
1241 if (sdio_ireg
& UP_LD_HOST_INT_STATUS
) {
1242 card
->mp_rd_bitmap
=
1243 ((u32
) card
->mp_regs
[reg
->rd_bitmap_u
]) << 8;
1244 card
->mp_rd_bitmap
|= (u32
) card
->mp_regs
[reg
->rd_bitmap_l
];
1245 dev_dbg(adapter
->dev
, "int: UPLD: rd_bitmap=0x%08x\n",
1246 card
->mp_rd_bitmap
);
1249 ret
= mwifiex_get_rd_port(adapter
, &port
);
1251 dev_dbg(adapter
->dev
,
1252 "info: no more rd_port available\n");
1255 len_reg_l
= reg
->rd_len_p0_l
+ (port
<< 1);
1256 len_reg_u
= reg
->rd_len_p0_u
+ (port
<< 1);
1257 rx_len
= ((u16
) card
->mp_regs
[len_reg_u
]) << 8;
1258 rx_len
|= (u16
) card
->mp_regs
[len_reg_l
];
1259 dev_dbg(adapter
->dev
, "info: RX: port=%d rx_len=%u\n",
1262 (rx_len
+ MWIFIEX_SDIO_BLOCK_SIZE
-
1263 1) / MWIFIEX_SDIO_BLOCK_SIZE
;
1264 if (rx_len
<= INTF_HEADER_LEN
||
1265 (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
) >
1266 MWIFIEX_RX_DATA_BUF_SIZE
) {
1267 dev_err(adapter
->dev
, "invalid rx_len=%d\n",
1271 rx_len
= (u16
) (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
);
1273 skb
= dev_alloc_skb(rx_len
);
1276 dev_err(adapter
->dev
, "%s: failed to alloc skb",
1281 skb_put(skb
, rx_len
);
1283 dev_dbg(adapter
->dev
, "info: rx_len = %d skb->len = %d\n",
1286 if (mwifiex_sdio_card_to_host_mp_aggr(adapter
, skb
,
1290 dev_err(adapter
->dev
, "card_to_host_mpa failed:"
1291 " int status=%#x\n", sdio_ireg
);
1292 if (mwifiex_read_reg(adapter
,
1293 CONFIGURATION_REG
, &cr
))
1294 dev_err(adapter
->dev
,
1295 "read CFG reg failed\n");
1297 dev_dbg(adapter
->dev
,
1298 "info: CFG reg val = %d\n", cr
);
1299 if (mwifiex_write_reg(adapter
,
1302 dev_err(adapter
->dev
,
1303 "write CFG reg failed\n");
1305 dev_dbg(adapter
->dev
, "info: write success\n");
1306 if (mwifiex_read_reg(adapter
,
1307 CONFIGURATION_REG
, &cr
))
1308 dev_err(adapter
->dev
,
1309 "read CFG reg failed\n");
1311 dev_dbg(adapter
->dev
,
1312 "info: CFG reg val =%x\n", cr
);
1322 * This function aggregates transmission buffers in driver and downloads
1323 * the aggregated packet to card.
1325 * The individual packets are aggregated by copying into an aggregation
1326 * buffer and then downloaded to the card. Previous unsent packets in the
1327 * aggregation buffer are pre-copied first before new packets are added.
1328 * Aggregation is done till there is space left in the aggregation buffer,
1329 * or till new packets are available.
1331 * The function will only download the packet to the card when aggregation
1332 * stops, otherwise it will just aggregate the packet in aggregation buffer
1335 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter
*adapter
,
1336 u8
*payload
, u32 pkt_len
, u32 port
,
1339 struct sdio_mmc_card
*card
= adapter
->card
;
1341 s32 f_send_aggr_buf
= 0;
1342 s32 f_send_cur_buf
= 0;
1343 s32 f_precopy_cur_buf
= 0;
1344 s32 f_postcopy_cur_buf
= 0;
1347 if ((!card
->mpa_tx
.enabled
) || (port
== CTRL_PORT
)) {
1348 dev_dbg(adapter
->dev
, "info: %s: tx aggregation disabled\n",
1352 goto tx_curr_single
;
1356 /* More pkt in TX queue */
1357 dev_dbg(adapter
->dev
, "info: %s: more packets in queue.\n",
1360 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1361 if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card
) &&
1362 MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
)) {
1363 f_precopy_cur_buf
= 1;
1365 if (!(card
->mp_wr_bitmap
&
1366 (1 << card
->curr_wr_port
)) ||
1367 !MP_TX_AGGR_BUF_HAS_ROOM(
1368 card
, pkt_len
+ next_pkt_len
))
1369 f_send_aggr_buf
= 1;
1371 /* No room in Aggr buf, send it */
1372 f_send_aggr_buf
= 1;
1374 if (MP_TX_AGGR_PORT_LIMIT_REACHED(card
) ||
1375 !(card
->mp_wr_bitmap
&
1376 (1 << card
->curr_wr_port
)))
1379 f_postcopy_cur_buf
= 1;
1382 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
) &&
1383 (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1384 f_precopy_cur_buf
= 1;
1389 /* Last pkt in TX queue */
1390 dev_dbg(adapter
->dev
, "info: %s: Last packet in Tx Queue.\n",
1393 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1394 /* some packs in Aggr buf already */
1395 f_send_aggr_buf
= 1;
1397 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
))
1398 f_precopy_cur_buf
= 1;
1400 /* No room in Aggr buf, send it */
1407 if (f_precopy_cur_buf
) {
1408 dev_dbg(adapter
->dev
, "data: %s: precopy current buffer\n",
1410 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1412 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card
) ||
1413 MP_TX_AGGR_PORT_LIMIT_REACHED(card
))
1414 /* No more pkts allowed in Aggr buf, send it */
1415 f_send_aggr_buf
= 1;
1418 if (f_send_aggr_buf
) {
1419 dev_dbg(adapter
->dev
, "data: %s: send aggr buffer: %d %d\n",
1421 card
->mpa_tx
.start_port
, card
->mpa_tx
.ports
);
1422 mport
= (adapter
->ioport
| 0x1000 |
1423 (card
->mpa_tx
.ports
<< 4)) + card
->mpa_tx
.start_port
;
1424 ret
= mwifiex_write_data_to_card(adapter
, card
->mpa_tx
.buf
,
1425 card
->mpa_tx
.buf_len
, mport
);
1427 MP_TX_AGGR_BUF_RESET(card
);
1431 if (f_send_cur_buf
) {
1432 dev_dbg(adapter
->dev
, "data: %s: send current buffer %d\n",
1434 ret
= mwifiex_write_data_to_card(adapter
, payload
, pkt_len
,
1435 adapter
->ioport
+ port
);
1438 if (f_postcopy_cur_buf
) {
1439 dev_dbg(adapter
->dev
, "data: %s: postcopy current buffer\n",
1441 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1448 * This function downloads data from driver to card.
1450 * Both commands and data packets are transferred to the card by this
1453 * This function adds the SDIO specific header to the front of the buffer
1454 * before transferring. The header contains the length of the packet and
1455 * the type. The firmware handles the packets based upon this set type.
1457 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter
*adapter
,
1458 u8 type
, struct sk_buff
*skb
,
1459 struct mwifiex_tx_param
*tx_param
)
1461 struct sdio_mmc_card
*card
= adapter
->card
;
1465 u32 port
= CTRL_PORT
;
1466 u8
*payload
= (u8
*)skb
->data
;
1467 u32 pkt_len
= skb
->len
;
1469 /* Allocate buffer and copy payload */
1470 blk_size
= MWIFIEX_SDIO_BLOCK_SIZE
;
1471 buf_block_len
= (pkt_len
+ blk_size
- 1) / blk_size
;
1472 *(u16
*) &payload
[0] = (u16
) pkt_len
;
1473 *(u16
*) &payload
[2] = type
;
1476 * This is SDIO specific header
1478 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1479 * MWIFIEX_TYPE_EVENT = 3)
1481 if (type
== MWIFIEX_TYPE_DATA
) {
1482 ret
= mwifiex_get_wr_port_data(adapter
, &port
);
1484 dev_err(adapter
->dev
, "%s: no wr_port available\n",
1489 adapter
->cmd_sent
= true;
1490 /* Type must be MWIFIEX_TYPE_CMD */
1492 if (pkt_len
<= INTF_HEADER_LEN
||
1493 pkt_len
> MWIFIEX_UPLD_SIZE
)
1494 dev_err(adapter
->dev
, "%s: payload=%p, nb=%d\n",
1495 __func__
, payload
, pkt_len
);
1498 /* Transfer data to card */
1499 pkt_len
= buf_block_len
* blk_size
;
1502 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1503 port
, tx_param
->next_pkt_len
1506 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1510 if (type
== MWIFIEX_TYPE_CMD
)
1511 adapter
->cmd_sent
= false;
1512 if (type
== MWIFIEX_TYPE_DATA
)
1513 adapter
->data_sent
= false;
1515 if (type
== MWIFIEX_TYPE_DATA
) {
1516 if (!(card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1517 adapter
->data_sent
= true;
1519 adapter
->data_sent
= false;
1527 * This function allocates the MPA Tx and Rx buffers.
1529 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter
*adapter
,
1530 u32 mpa_tx_buf_size
, u32 mpa_rx_buf_size
)
1532 struct sdio_mmc_card
*card
= adapter
->card
;
1535 card
->mpa_tx
.buf
= kzalloc(mpa_tx_buf_size
, GFP_KERNEL
);
1536 if (!card
->mpa_tx
.buf
) {
1541 card
->mpa_tx
.buf_size
= mpa_tx_buf_size
;
1543 card
->mpa_rx
.buf
= kzalloc(mpa_rx_buf_size
, GFP_KERNEL
);
1544 if (!card
->mpa_rx
.buf
) {
1549 card
->mpa_rx
.buf_size
= mpa_rx_buf_size
;
1553 kfree(card
->mpa_tx
.buf
);
1554 kfree(card
->mpa_rx
.buf
);
1561 * This function unregisters the SDIO device.
1563 * The SDIO IRQ is released, the function is disabled and driver
1564 * data is set to null.
1567 mwifiex_unregister_dev(struct mwifiex_adapter
*adapter
)
1569 struct sdio_mmc_card
*card
= adapter
->card
;
1571 if (adapter
->card
) {
1572 /* Release the SDIO IRQ */
1573 sdio_claim_host(card
->func
);
1574 sdio_release_irq(card
->func
);
1575 sdio_disable_func(card
->func
);
1576 sdio_release_host(card
->func
);
1577 sdio_set_drvdata(card
->func
, NULL
);
1582 * This function registers the SDIO device.
1584 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1586 static int mwifiex_register_dev(struct mwifiex_adapter
*adapter
)
1589 struct sdio_mmc_card
*card
= adapter
->card
;
1590 struct sdio_func
*func
= card
->func
;
1592 /* save adapter pointer in card */
1593 card
->adapter
= adapter
;
1595 sdio_claim_host(func
);
1597 /* Request the SDIO IRQ */
1598 ret
= sdio_claim_irq(func
, mwifiex_sdio_interrupt
);
1600 pr_err("claim irq failed: ret=%d\n", ret
);
1604 /* Set block size */
1605 ret
= sdio_set_block_size(card
->func
, MWIFIEX_SDIO_BLOCK_SIZE
);
1607 pr_err("cannot set SDIO block size\n");
1612 sdio_release_host(func
);
1613 sdio_set_drvdata(func
, card
);
1615 adapter
->dev
= &func
->dev
;
1617 strcpy(adapter
->fw_name
, card
->firmware
);
1622 sdio_release_irq(func
);
1624 sdio_disable_func(func
);
1625 sdio_release_host(func
);
1626 adapter
->card
= NULL
;
1632 * This function initializes the SDIO driver.
1634 * The following initializations steps are followed -
1635 * - Read the Host interrupt status register to acknowledge
1636 * the first interrupt got from bootloader
1637 * - Disable host interrupt mask register
1639 * - Initialize SDIO variables in card
1640 * - Allocate MP registers
1641 * - Allocate MPA Tx and Rx buffers
1643 static int mwifiex_init_sdio(struct mwifiex_adapter
*adapter
)
1645 struct sdio_mmc_card
*card
= adapter
->card
;
1646 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
1651 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1652 * from the bootloader. If we don't do this we get a interrupt
1653 * as soon as we register the irq.
1655 mwifiex_read_reg(adapter
, HOST_INTSTATUS_REG
, &sdio_ireg
);
1657 /* Disable host interrupt mask register for SDIO */
1658 mwifiex_sdio_disable_host_int(adapter
);
1660 /* Get SDIO ioport */
1661 mwifiex_init_sdio_ioport(adapter
);
1663 /* Initialize SDIO variables in card */
1664 card
->mp_rd_bitmap
= 0;
1665 card
->mp_wr_bitmap
= 0;
1666 card
->curr_rd_port
= reg
->start_rd_port
;
1667 card
->curr_wr_port
= reg
->start_wr_port
;
1669 card
->mp_data_port_mask
= reg
->data_port_mask
;
1671 card
->mpa_tx
.buf_len
= 0;
1672 card
->mpa_tx
.pkt_cnt
= 0;
1673 card
->mpa_tx
.start_port
= 0;
1675 card
->mpa_tx
.enabled
= 1;
1676 card
->mpa_tx
.pkt_aggr_limit
= card
->mp_agg_pkt_limit
;
1678 card
->mpa_rx
.buf_len
= 0;
1679 card
->mpa_rx
.pkt_cnt
= 0;
1680 card
->mpa_rx
.start_port
= 0;
1682 card
->mpa_rx
.enabled
= 1;
1683 card
->mpa_rx
.pkt_aggr_limit
= card
->mp_agg_pkt_limit
;
1685 /* Allocate buffers for SDIO MP-A */
1686 card
->mp_regs
= kzalloc(reg
->max_mp_regs
, GFP_KERNEL
);
1690 ret
= mwifiex_alloc_sdio_mpa_buffers(adapter
,
1691 SDIO_MP_TX_AGGR_DEF_BUF_SIZE
,
1692 SDIO_MP_RX_AGGR_DEF_BUF_SIZE
);
1694 dev_err(adapter
->dev
, "failed to alloc sdio mp-a buffers\n");
1695 kfree(card
->mp_regs
);
1703 * This function resets the MPA Tx and Rx buffers.
1705 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter
*adapter
)
1707 struct sdio_mmc_card
*card
= adapter
->card
;
1709 MP_TX_AGGR_BUF_RESET(card
);
1710 MP_RX_AGGR_BUF_RESET(card
);
1714 * This function cleans up the allocated card buffers.
1716 * The following are freed by this function -
1721 static void mwifiex_cleanup_sdio(struct mwifiex_adapter
*adapter
)
1723 struct sdio_mmc_card
*card
= adapter
->card
;
1725 kfree(card
->mp_regs
);
1726 kfree(card
->mpa_tx
.buf
);
1727 kfree(card
->mpa_rx
.buf
);
1731 * This function updates the MP end port in card.
1734 mwifiex_update_mp_end_port(struct mwifiex_adapter
*adapter
, u16 port
)
1736 struct sdio_mmc_card
*card
= adapter
->card
;
1737 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
1740 card
->mp_end_port
= port
;
1742 card
->mp_data_port_mask
= reg
->data_port_mask
;
1744 for (i
= 1; i
<= card
->max_ports
- card
->mp_end_port
; i
++)
1745 card
->mp_data_port_mask
&= ~(1 << (card
->max_ports
- i
));
1747 card
->curr_wr_port
= reg
->start_wr_port
;
1749 dev_dbg(adapter
->dev
, "cmd: mp_end_port %d, data port mask 0x%x\n",
1750 port
, card
->mp_data_port_mask
);
1753 static struct mmc_host
*reset_host
;
1754 static void sdio_card_reset_worker(struct work_struct
*work
)
1756 struct mmc_host
*target
= reset_host
;
1758 /* The actual reset operation must be run outside of driver thread.
1759 * This is because mmc_remove_host() will cause the device to be
1760 * instantly destroyed, and the driver then needs to end its thread,
1761 * leading to a deadlock.
1763 * We run it in a totally independent workqueue.
1766 pr_err("Resetting card...\n");
1767 mmc_remove_host(target
);
1768 /* 20ms delay is based on experiment with sdhci controller */
1770 mmc_add_host(target
);
1772 static DECLARE_WORK(card_reset_work
, sdio_card_reset_worker
);
1774 /* This function resets the card */
1775 static void mwifiex_sdio_card_reset(struct mwifiex_adapter
*adapter
)
1777 struct sdio_mmc_card
*card
= adapter
->card
;
1779 reset_host
= card
->func
->card
->host
;
1780 schedule_work(&card_reset_work
);
1783 static struct mwifiex_if_ops sdio_ops
= {
1784 .init_if
= mwifiex_init_sdio
,
1785 .cleanup_if
= mwifiex_cleanup_sdio
,
1786 .check_fw_status
= mwifiex_check_fw_status
,
1787 .prog_fw
= mwifiex_prog_fw_w_helper
,
1788 .register_dev
= mwifiex_register_dev
,
1789 .unregister_dev
= mwifiex_unregister_dev
,
1790 .enable_int
= mwifiex_sdio_enable_host_int
,
1791 .process_int_status
= mwifiex_process_int_status
,
1792 .host_to_card
= mwifiex_sdio_host_to_card
,
1793 .wakeup
= mwifiex_pm_wakeup_card
,
1794 .wakeup_complete
= mwifiex_pm_wakeup_card_complete
,
1797 .update_mp_end_port
= mwifiex_update_mp_end_port
,
1798 .cleanup_mpa_buf
= mwifiex_cleanup_mpa_buf
,
1799 .cmdrsp_complete
= mwifiex_sdio_cmdrsp_complete
,
1800 .event_complete
= mwifiex_sdio_event_complete
,
1801 .card_reset
= mwifiex_sdio_card_reset
,
1805 * This function initializes the SDIO driver.
1807 * This initiates the semaphore and registers the device with
1811 mwifiex_sdio_init_module(void)
1813 sema_init(&add_remove_card_sem
, 1);
1815 /* Clear the flag in case user removes the card. */
1818 return sdio_register_driver(&mwifiex_sdio
);
1822 * This function cleans up the SDIO driver.
1824 * The following major steps are followed for cleanup -
1825 * - Resume the device if its suspended
1826 * - Disconnect the device if connected
1827 * - Shutdown the firmware
1828 * - Unregister the device from SDIO bus.
1831 mwifiex_sdio_cleanup_module(void)
1833 if (!down_interruptible(&add_remove_card_sem
))
1834 up(&add_remove_card_sem
);
1836 /* Set the flag as user is removing this module. */
1839 cancel_work_sync(&card_reset_work
);
1840 sdio_unregister_driver(&mwifiex_sdio
);
1843 module_init(mwifiex_sdio_init_module
);
1844 module_exit(mwifiex_sdio_cleanup_module
);
1846 MODULE_AUTHOR("Marvell International Ltd.");
1847 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION
);
1848 MODULE_VERSION(SDIO_VERSION
);
1849 MODULE_LICENSE("GPL v2");
1850 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME
);
1851 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME
);
1852 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME
);